The basic function of the catabolic operons has alwasy been to find the alternative <span>energy source when glucose is absent or not present in sufficient amounts. So it will be the first option. Hope you find it useful</span>
        
             
        
        
        
It could mean that the continents that the mountains are on were once next to each other. This also proves the theory of continental drift/Pangea
 
        
             
        
        
        
The earlobe trait is denoted by E and e alleles, whereas the eye trait is denoted by B and b alleles. The Punnet square allows identifying the expected proportions in the progeny.
<h3>The Punnett square and inheritance </h3>
The Punnett square is a diagram used to represent the gamete combinations in order to estimate genotypes and phenotypes in the progeny.
The earlobe trait is denoted by E and e alleles, thereby there are two types of gametes in heterozygous individuals.
In this case:
            E            e
E        EE          Ee
e        Ee          ee
Moreover, the eye trait is denoted by B and b alleles, thereby there are two types of gametes in heterozygous individuals.
In this case:
            B            b
B        BB          Bb
b        Bb          bb
Learn more about Punnett square here:
brainly.com/question/9582290
 
        
             
        
        
        
Answer:
A new ecosystem can lead to specitation.
-Xax
 
        
             
        
        
        
Answer: DNA
Explanation:
mRNA is the complement of the DNA template strand. Transcription (process that makes mRNA) requires DNA and nucleotides (A,U,G and C)